Dave, make sure the plug wires are in the proper order!
mike f
----- Original Message -----
From: "David R. Conrad" <conrad1@gte.net>
To: "Datsun List" <datsun-roadsters@autox.team.net>
Sent: Thursday, October 18, 2001 12:02 AM
Subject: Kokua (help) Needed on Big Island... x-mac-creator="4D4F5353"
> Hello List:
>
> My roadster suddenly started operating on three cylinders last July. Some
> may recall an appeal from me for advice at that time. I again thank those
> who offered opinions/suggestions. My initial diagnostics suggested a bad
> valve in #1 cylinder. That *is* what it turned out to be, a triangular
> shaped chip out of the exhaust valve of #1.
>
> Slowed down by heavy involvement in some home improvements, I finally got
> the head off and to "Akamai (meaning 'da best!) Machine" for
> reconditioning. Just after I left it with them, they closed down the shop
> for a 2-week vacation. After a few delays in getting the parts (some
> associated with the transportation delays after Sept. 11)
>
> Finally got the head back from Akamai Machine last week. Believe that
> they did an excellent job. I put the engine back together last weekend
> with high hopes that the car would run even better than before; it had
been
> running well before the valve failed.
>
> I adjusted the valves to .020 (cold) and performed compression checks. I
> thought the results were quite good. "Dry" the mean value was 133 psi
> (+1, -2), very consistent for two checks, and with 10cc of oil added, the
> mean value was 145 (+/-) 3 psi.
>
> I made no changes to points and timing since it had been running well
> before the valve failure.
>
> Then I went to start it (full of confidence). Was I disappointed!
>
> Very hard to start, and when started, it ran very irregularly, with
> definite missing and occasional backfiring. It suggested that the timing
> was off. The distributor hadn't been touched!
>
> Checked the dwell, and it was 59*, higher than when I had set it, maybe
> influenced by the fact that the rpm had to be ~15k to keep it running.
> (though I thought dwell was not rpm dependent). Anyhow I reset it to 50*
> Then I tried adjusting the timing about 5* each way, advance/retard.
> Seemed to run a little better at 5* retard (that is, rotating the dist. 5*
> CCW--maybe that's advance, I don't remember).
>
> Anyhow, I've about run out of ideas and it still runs like crap.
>
> I would welcome any thoughts, and thanks in advance!!
>
> Dave
>
> '68 1600
> Kailua-Kona
>
> ///
> /// datsun-roadsters@autox.team.net mailing list
> /// Send admin requests to majordomo@autox.team.net or go to
> /// http://www.team.net/cgi-bin/majorcool
> /// Send list postings to datsun-roadsters@autox.team.net
> ///
///
/// datsun-roadsters@autox.team.net mailing list
///
|